CN103162233A - Lensand display equipment provided therewith - Google Patents
Lensand display equipment provided therewith Download PDFInfo
- Publication number
- CN103162233A CN103162233A CN2012105350267A CN201210535026A CN103162233A CN 103162233 A CN103162233 A CN 103162233A CN 2012105350267 A CN2012105350267 A CN 2012105350267A CN 201210535026 A CN201210535026 A CN 201210535026A CN 103162233 A CN103162233 A CN 103162233A
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- lens
- light
- flat surfaces
- basal surface
- external diameter
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
- F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0263—Diffusing elements; Afocal elements characterised by the diffusing properties with positional variation of the diffusing properties, e.g. gradient or patterned diffuser
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
A lens includes an upper flat surface having a first outer diameter, a bottom surface having a second outer diameter and a third inner diameter, an external curved surface which connects the upper flat surface and the bottom surface, and an inner curved surface which protrudes toward the upper flat surface from the bottom surface at the third inner diameter.
Description
Technical field
Backlight assembly and display device that one exemplary embodiment of the present invention relates to a kind of lens and has these lens.More specifically, one exemplary embodiment of the present invention relates to about the lens of less light source and backlight assembly and the display device with these lens.
Background technology
Liquid crystal display (LCD) equipment needs external light source to show to have the image of expectation brightness, because LCD equipment self can not produce light.LCD equipment comprises as the backlight assembly of external light source and is used to LCD display floater from the light display image of external light source.
Backlight assembly comprises light source, and light source can be arranged on printed circuit board (PCB) (PCB) substrate and can be categorized as according to the position of light source peripheral type assembly and full run-down type assembly.In the peripheral type assembly, light source is arranged on the edge of LCD display floater, makes light that light source produces pass to be arranged on the optical plate below the LCD display floater and is provided in the LCD display floater.In the full run-down type assembly, a plurality of light sources are arranged on below the LCD display floater, and the light that is produced by light source directly is provided in the LCD display floater.The full run-down type assembly is compared with the peripheral type assembly can have higher brightness and better contrast.
Cold-cathode fluorescence lamp (CCFL) can be used for the light source of full run-down type assembly.The advantage long due to the life-span, that low in energy consumption, lightweight and thickness is little, light emitting diode (LED) lamp can be used as light source.
The LED lamp comprises spot light and a plurality of LED encapsulation that produces light.The light that is produced and launched by spot light is scattered in the LED encapsulation.Point-like light (point light) from spot light is transformed into planar light or surface light by lens.
Yet the spot light of LED lamp has for the little light distribution area of each spot light and limited brightness.Therefore, backlight assembly can comprise a hundreds of spot light and/or LED lamp.Along with the quantity increase of spot light and/or LED lamp, the quantity of PCB and/or the size of PCB increase.Therefore, the manufacturing cost of LCD display device is greatly increased.
Summary of the invention
One or more one exemplary embodiment of the present invention provides a kind of lens that use less light source.
One or more one exemplary embodiment of the present invention also provides the backlight assembly that comprises these lens.
One or more one exemplary embodiment of the present invention also provides the display device that comprises these lens.
According to one exemplary embodiment of the present invention, a kind of lens comprise: upper flat surfaces has the first external diameter; Basal surface has the second external diameter and the 3rd internal diameter; Exterior curved surface, flat surfaces and basal surface in connection; And interior curve surface, the 3rd inner radius from basal surface towards on flat surfaces outstanding.
In an exemplary embodiment, the second external diameter can be approximately six times of the first external diameter.
In an exemplary embodiment, the interior curve surface perpendicular on can comprise half-oval shaped in the sectional view of flat surfaces intercepting.
In an exemplary embodiment, can be approximately 1.5 to approximately 2.0 apart from the ratio of B and distance A.In described sectional view, distance A is defined as half that half-oval shaped is parallel to maximum length that flat surfaces obtains, is the maximum length that half-oval shaped obtains perpendicular to upper flat surfaces apart from B.
In an exemplary embodiment, the angle between basal surface and interior curve surface can be for about 105 degree to about 115 degree.
In an exemplary embodiment, basal surface can comprise that roughness is less than the about embossing pattern of 4 microns (embossed pattern).
In an exemplary embodiment, the first external diameter can be greater than the twice of the 3rd internal diameter.
In an exemplary embodiment, lens can also comprise outstanding from basal surface and away from the alignment protrusion of upper flat surfaces.
In an exemplary embodiment, lens can also comprise two lens joint portions, and the sidepiece that meets from basal surface and the exterior curved surface of lens in described lens joint portions extends.
In an exemplary embodiment, the light from the exterior curved surface emission can comprise that approximately 65 degree are to the approximately light angle of orientation distribution of 75 degree.
In an exemplary embodiment, can comprise less than the about intensity band width of 20 degree from the light of exterior curved surface emission.
In an exemplary embodiment, can be approximately 0.15 from the ratio of the center intensity of the light of exterior curved surface emission and peak strength.
According to one exemplary embodiment of the present invention, a kind of backlight assembly comprises lens, substrate, light source and base plate.Lens comprise: upper flat surfaces has the first external diameter; Basal surface has the second external diameter and the 3rd internal diameter; Exterior curved surface, flat surfaces and basal surface in connection; Interior curve surface, the 3rd inner radius from basal surface towards on flat surfaces outstanding; And two or more lens joint portion.Substrate has than the little width of distance between the end of two the lens joint portions respect to one another in two or more lens joint portions.Light source is positioned on substrate and produces light.Base plate comprises the joint portion, the end of being combined with each lens joint portion.Substrate is between lens and base plate.
In an exemplary embodiment, backlight assembly can also comprise the reflector plate between lens and substrate.
According to one exemplary embodiment of the present invention, a kind of display device comprises: LCD MODULE; Light diffusing board comprises dot pattern in its surface; And backlight assembly.Backlight assembly comprises lens, substrate, light source and base plate.Lens are overlapping with the dot pattern of light diffusing board respectively.Lens comprise: upper flat surfaces has the first external diameter; Basal surface has the second external diameter and the 3rd internal diameter; Exterior curved surface, flat surfaces and basal surface in connection; Interior curve surface, the 3rd inner radius from basal surface towards on flat surfaces outstanding; And two lens joint portions.Substrate has the width less than the distance between lens joint portion.Light source is positioned on substrate and produces light.Base plate comprises the joint portion, the end of being combined with each lens joint portion.Substrate is between lens and base plate.
In an exemplary embodiment, dot pattern comprises a plurality of points, and the distance between consecutive points can be approximately 1 millimeter (mm) to approximately 1.5 millimeters (mm).
In an exemplary embodiment, dot pattern comprises a plurality of points, and the ultimate range between the outward flange of described point can be about 0.3mm to 1.0mm.
In an exemplary embodiment, dot pattern comprises a plurality of points, and the distance between consecutive points can reduce and reduce along with the distance from the center of dot pattern.
In an exemplary embodiment, dot pattern comprises a plurality of points, and the ultimate range between the outward flange of described point can reduce along with the distance from the center of dot pattern and increase gradually.
In an exemplary embodiment, dot pattern can have approximately 50% titanium dioxide (TiO by printing on the surface of diffusing panel
2) China ink and on the surface of diffusing panel.
According to one or more one exemplary embodiment of the present invention, owing to being distributed by the light of lens reflection more even and widelyr, backlight assembly can comprise light source still less.
In addition, due to by using the bar shaped substrate to reduce the use of printed circuit board (PCB) (PCB) substrate, thus saved the high material cost of PCB substrate, and reduced backlight assembly and/or comprised the overall manufacturing cost of the display device of this backlight assembly.
In addition, due to the dot pattern of diffusing panel dispersed light more equably, so reduce or effectively prevented the speck and the blackening that distribute and cause by irregular light.
Description of drawings
Describe one exemplary embodiment of the present invention in detail by the reference accompanying drawing, above-mentioned feature with other of the present invention will become more obvious, in accompanying drawing:
Fig. 1 is decomposition diagram, and the one exemplary embodiment according to display device of the present invention is shown;
Fig. 2 is plane, and the one exemplary embodiment of the backlight assembly of the display device in Fig. 1 is shown;
Fig. 3 is the sectional view of the I-I ' intercepting along the line of the backlight assembly in Fig. 2;
Fig. 4 is perspective view, and the one exemplary embodiment of the lens of the backlight assembly in Fig. 2 is shown;
Fig. 5 is the sectional view of the II-II ' intercepting along the line of the lens in Fig. 4;
Fig. 6 is the sectional view of the III-III ' intercepting along the line of the lens in Fig. 4;
Fig. 7 is perspective view, and backlight assembly in Fig. 1 and the one exemplary embodiment of diffusing panel are shown;
Fig. 8 is plane, and the one exemplary embodiment of the dot pattern of the diffusing panel in Fig. 7 is shown; And
Fig. 9 is the sectional view of backlight assembly in Fig. 7 and diffusing panel IV-IV ' intercepting along the line.
The specific embodiment
To understand, when an element or layer be called as " " another element or layer is upper, " being connected to " or " being couple to " during to another element or layer, it can be directly on another element or layer, directly connect or be couple to another element or layer, element or layer are between two parties perhaps arranged.On the contrary, when an element is called as " directly existing " another element or layer is upper, " being directly connected to " or " being directly coupled to " during to another element or layer, not element or layer between two parties.When used herein, connection can finger element physical connection or electrical connection each other.Similar Reference numeral represents similar element all the time.When used herein, term " and/or " comprise one or more listed relevant items arbitrarily and all combinations.
To understand, although the term first, second, third, etc. can be used for representing each element, parts, zone, layer and/or part here, these elements, parts, zone, layer and/or part should not be subject to these term restrictions.These terms only are used for an element, parts, zone, layer or part and another element, parts, zone, layer or part are differentiated.Therefore, the first element of discussing of the below, parts, zone, layer or part can be called as the second element, parts, zone, layer or partly and can not depart from instruction of the present invention.
For the convenience of describing, here can usage space relativity term such as D score, " under ", " on ", " on " etc. describe as shown in the drawing element or the relation of feature and another element (or a plurality of element) or feature (or a plurality of feature).To understand, the space relative terms is intended to contain the different orientation of device in using or operating except orientation shown in the drawings.For example, if the device in accompanying drawing is reversed, so relatively other elements or feature be described as " under " or the element of " following " will with respect to other elements or characteristic orientation for " on ".Therefore, exemplary term " under " can comprise on and under two orientations.Device can additionally be orientated (90-degree rotation or in other orientations), and space used herein relativity is described language and also correspondingly understood.
Term used herein only is used for describing specific embodiment and is not intended to limit the present invention.When used herein, singulative " " and " being somebody's turn to do " are intended to also comprise plural form, unless additionally clear description of context.Also will understand, when using in this manual, term " comprises " and/or specifies " comprising " existence of described feature, integral body, step, operation, element and/or parts, but does not get rid of existence or the increase of one or more further features, integral body, step, operation, element, parts and/or its combination.
Here describe embodiments of the invention with reference to sectional view, these sectional views are schematic diagrames of idealized embodiment of the present invention (and intermediate structure).The variation of the shape shown that therefore, causes due to for example manufacturing technology and/or tolerance can be expected.Therefore, embodiments of the invention should not be understood to be limited to the given shape in shown here zone, but will comprise by for example making the form variations that causes.
Unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) all have the same implication of the common understanding of the institute of the those of ordinary skill in the field under the present invention.What will be further understood that is, such as defined term in universaling dictionary, unless clearly define, otherwise should be interpreted as having the implication consistent with they implications in the linguistic context of association area, and should not be interpreted as Utopian or excessive formal meaning herein.
Below, explain in detail with reference to the accompanying drawings the present invention.
Fig. 1 is decomposition diagram, and the one exemplary embodiment according to display device of the present invention is shown.
With reference to Fig. 1, display device 1000 comprises top frame 400, liquid crystal display (LCD) module 300, diffusing panel 200 and backlight assembly 100.Top frame 400 and backlight assembly 100 combinations are to take in LCD module 300 and diffusing panel 200.LCD module 300 shows image according to signal, and uses the light that is produced by backlight assembly 100 to show image.The light that diffusing panel 200 diffusions are produced by backlight assembly 100 and provides basic uniform light to LCD module 300 so that light distributes more uniformly.
Fig. 2 is plane, and the one exemplary embodiment of the backlight assembly of the display device in Fig. 1 is shown.
With reference to Fig. 2, backlight assembly 100 comprises a plurality of lens 110, substrate 120 and base plate 130, and substrate 120 comprises a plurality of spot light (not shown).A plurality of lens 110 are according to a plurality of spot light settings on substrate 120.The light of a plurality of lens 110 spaced point light source place's generations.Each lens 110 comprises two or more lens joint portion 115.Joint portion 115 and base plate 130 combinations.
In plane, substrate 120 comprises along the longitudinal axis (in Fig. 2, level) of first direction extension and along the transverse axis (in Fig. 2, vertical) that extends perpendicular to the second direction of first direction.Substrate 120 is the width on second direction between the width on second direction is less than the end of the lens joint portion 115 of lens 110.Substrate 120 only is fixed to base plate 130 by lens joint portion 115 and base plate 130 combinations with lens 110.Therefore, substrate 120 does not cover (for example, overlapping) whole base plate 130.Substrate 120 can additionally be called bar shaped, and is because substrate 120 is narrow parts, relatively long and have a basic width uniformly.Due to the not overlapping whole base plate 130 of substrate 120, so the size reduction of substrate 120.Usually, be used for the cost of material of substrate 120 very high.When bar shaped substrate 120 be used and only by with lens 110 and base plate 130 when being fixed to base plate 130, backlight assembly 120 is with the material manufacturing of less substrate 120.Therefore, can reduce the overall manufacturing cost of backlight assembly 100 and display device 1000.
Fig. 3 is the sectional view of the I-I ' intercepting along the line of the backlight assembly in Fig. 2.
With reference to Fig. 2 and Fig. 3, the one exemplary embodiment of backlight assembly 100 comprises lens 110, the substrate below lens 110 120 and base plate 130.More specifically, lens 110 comprise flat surfaces 111, basal surface 112, exterior curved surface 113 and interior curve surface 114.Upper flat surfaces 111 substantially flats are all reflected at upper flat surfaces 111 places from the incident light of the bottom of lens 110.Exterior curved surface 113 is connected upper flat surfaces 111 with basal surface 112.Interior curve surface 114 and the inside of basal surface 112 is surperficial to be connected and to receive incident light.
Fig. 4 is perspective view, and the one exemplary embodiment of the lens of the backlight assembly in Fig. 2 is shown.Fig. 5 is the sectional view of the II-II ' intercepting along the line of the lens in Fig. 4.
With reference to Fig. 4 and Fig. 5, lens 110 comprise flat surfaces 111, basal surface 112, exterior curved surface 113 and interior curve surface 114.In addition, lens 110 comprise two or more lens joint portion 115.
In plane, upper flat surfaces 111 has round-shaped, and this is round-shaped has the first external diameter 2F.Upper flat surfaces 111 increases all refractions from the ratio of the incident light of the bottom of lens 110, and improves the uniformity of the distribution of light.In plane, basal surface 112 is the annular that comprises the second external diameter 2D and the 3rd internal diameter 2L.Basal surface 112 with second external diameter 2D is connected with exterior curved surface 113, and exterior curved surface 113 is connected with upper flat surfaces 111.Exterior curved surface 113 is actually the side surface of lens 110.
Calibration (graduation) at the diameter of plane peripheral curved surface 113 is adjusted, makes to have approximately 65 degree to the about light angles of orientation of 75 degree from the light of exterior curved surface 113 emissions and distribute.The light angle of orientation distributes and to be normally defined light intensity greater than half angular range of maximum intensity.Have such light angle of orientation from the light of exterior curved surface 113 emission and distribute, namely at about 65 degree to half greater than maximum intensity of the light intensity of the some place lens 110 of about 75 degree.
In addition, exterior curved surface 113 forms to make from the light of exterior curved surface 113 emission and has less than the about intensity band width of 20 degree.In addition, can be adjusted into from the light of exterior curved surface 113 emission the ratio that makes center intensity and peak strength is approximately 0.15.Center intensity be defined as from lens 110 central point along the light intensity of normal direction (namely, from the center of upper flat surfaces 111 along normal direction) emission.Peak strength is defined as the intensity at the maximum light intensity place of the side surface of lens 110.Be approximately 0.15 the time when the diameter of exterior curved surface 113 is adjusted into the ratio that makes center intensity and peak strength, can distribute more equably from the light of lens 110 emissions.
Fig. 6 is the sectional view of the III-III ' intercepting along the line of lens in Fig. 4.
With reference to Fig. 6, lens 110 can also comprise alignment protrusion 119.Substrate 120 can also comprise the alignment recess of extending to its interior zone from the upper surface of substrate 120.Alignment recess can be partly or the thickness that passes completely through substrate 120 extend.Alignment protrusion 119 is projected in alignment recess, with substrate 120 combinations, lens 110 is aligned in appropriate location in backlight assembly 100.Lens 110 are fixing by two or more lens joint portions 115 and alignment protrusion 119.Because lens 110 are fixed by at least three points, so lens 110 can be fixed on the appropriate location in backlight assembly 100.And, because lens 110 only comprise single alignment protrusion 119, comprise that with lens 110 two or more alignment protrusion compare, reduce or effectively prevented the leakage of light.
Fig. 7 is perspective view, and backlight assembly in Fig. 1 and the one exemplary embodiment of diffusing panel are shown.Fig. 8 is plane, and the one exemplary embodiment of the dot pattern of the diffusing panel in Fig. 7 is shown.
With reference to Fig. 7 and Fig. 8, diffusing panel 200 is arranged on backlight assembly 100 also overlapping with it.Diffusing panel 200 comprises a plurality of dot patterns 210.A plurality of dot patterns 210 arrange according to the lens 110 of backlight assembly 110, and namely a dot pattern 210 is overlapping with at least one lens 110 of backlight assembly 100.Dot pattern 210 diffusions are from the light of lens 110 emissions.Dot pattern 210 can form by printed patterns on diffusing panel 200.In an one exemplary embodiment, can use to have approximately 50% TiO when printed dot-pattern 210
2China ink.
Each dot pattern 210 comprises a plurality of projections, or is called a particle 211.The overall shape of the dot pattern 210 that is defined by a particle 211 in plane can be circle or rectangle, but the invention is not restricted to this.In plane, the distance between consecutive points particle 211, or be called the some pitch of dot pattern 210 can be approximately 1 millimeter (mm) to approximately 1.5 millimeters (mm).In addition, the ultimate range between the outward flange of some particle 211, or be called the spot diameter of dot pattern 210 can be for about 0.3mm to about 1.0mm.
Because the light that is provided to dot pattern 210 is more intensive in the center of dot pattern 210, so can be more intensive in the distribution of the center point particle 211 of dot pattern 210.Be to realize the more high density at the some particle 211 of the center of dot pattern 210, can increase in the density of the center point particle 211 of dot pattern 210, perhaps along with to the reducing of the distance at the center of dot pattern 210, the size of putting particle 211 can increase gradually.The basis of some particle 211 is to the distribution of the distance at the center of dot pattern 210 dispersed light equably.
Fig. 9 is the sectional view of the IV-IV ' intercepting along the line of backlight assembly and diffusing panel in Fig. 7.
With reference to Fig. 9, the one exemplary embodiment of the lens 110 of backlight assembly 100 arranges corresponding to the dot pattern 210 of diffusing panel 200, for example in mode one to one.In plane, dot pattern 210 is arranged on lens 110 tops of backlight assembly 100 and overlapping with it.Advance towards the center of dot pattern 210 from the light that the top center of lens 110 is launched.Point particle 211 in the center of dot pattern 210 than the peripheral region of dot pattern 210 with higher density setting.Size at plane mid point particle 211 is uniformly, as shown in the embodiment of Fig. 8, and is uniformly in the size of sectional view mid point particle 211, as shown in the embodiment of Fig. 9.Yet, the invention is not restricted to this or do not limit by this, the size of some particle 211 can change to adjust the dispersion of light.
As mentioned above, according to one or more one exemplary embodiment of the present invention, owing to being distributed by the light of lens reflection more even and widelyr, backlight assembly can comprise light source still less.
In addition, due to by using the bar shaped substrate to reduce the use of printed circuit board (PCB) (PCB) substrate, saved the high material cost of PCB substrate, and reduced backlight assembly and/or comprised the overall manufacturing cost of the display device of backlight assembly.
In addition, due to the dot pattern of diffusing panel dispersed light more equably, reduce or effectively prevented the speck and the blackening that distribute and cause by irregular light.
More than explanation of the present invention to be should not be construed as be limited.Although described several one exemplary embodiment of the present invention, those skilled in the art will easily understand can be had many modifications in an exemplary embodiment and substantially not depart from novel teachings of the present invention and advantage.Therefore, all such modifications are intended to be included in of the present invention as in the claim restricted portion.In the claims, device adds the function clause and is intended to cover structure described here when carrying out described function, and not only covered structure equivalent and also cover structure of equal value.Therefore, will understand, and be more than explanation of the present invention to be should not be construed as be limited to disclosed particular exemplary embodiment, and modification and other embodiment of the disclosed embodiments is intended to be included in the scope of claim.The present invention is limited by the equivalent of claim and included claim.
Claims (10)
1. lens comprise:
Upper flat surfaces has the first external diameter;
The basal surface of annular has the second external diameter and the 3rd internal diameter;
Exterior curved surface connects described upper flat surfaces and described basal surface; And
Interior curve surface, outstanding from described basal surface flat surfaces on described in described the 3rd inner radius.
2. lens as claimed in claim 1, wherein said the second external diameter is approximately six times of described the first external diameter.
3. lens as claimed in claim 1, wherein said interior curve surface comprises half-oval shaped at the sectional view perpendicular to flat surfaces intercepting on described.
4. lens as claimed in claim 1, the angle between wherein said basal surface and described interior curve surface is that 105 degree are to 115 degree.
5. lens as claimed in claim 1, wherein said basal surface comprise that roughness is less than the embossing pattern of 4 microns.
6. lens as claimed in claim 1, described first external diameter of wherein said upper flat surfaces is greater than the twice of described the 3rd internal diameter of described basal surface.
7. lens as claimed in claim 1, also comprise from described basal surface and away from the outstanding alignment protrusion of described upper flat surfaces.
8. display device comprises:
LCD MODULE;
Light diffusing board comprises dot pattern on the surface of described light diffusing board; And
Backlight assembly comprises:
Lens, overlapping with the described dot pattern of described light diffusing board respectively, described lens comprise:
Upper flat surfaces has the first external diameter,
Basal surface has the second external diameter and the 3rd internal diameter,
Exterior curved surface connects described upper flat surfaces and described basal surface,
Interior curve surface, outstanding from described basal surface flat surfaces on described in described the 3rd inner radius, and
Two or more lens joint portion;
Substrate has than the little width of distance between the end of two lens joint portions respect to one another in described two or more lens joint portions;
Light source, on described substrate, wherein said light source produces light; And
Base plate comprises the joint portion, the end of being combined with each described lens joint portion, and wherein said substrate is between described lens and described base plate.
9. display device as claimed in claim 8, wherein said dot pattern comprises a plurality of points, the distance between consecutive points is 1 millimeter to 1.5 millimeters.
10. display device as claimed in claim 8, wherein said dot pattern comprises a plurality of points, the ultimate range between the outward flange of described point is 0.3 millimeter to 1.0 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711159960.2A CN107884989A (en) | 2011-12-12 | 2012-12-12 | Lens and the display device with the lens |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2011-0132850 | 2011-12-12 | ||
| KR1020110132850A KR101962121B1 (en) | 2011-12-12 | 2011-12-12 | Lens, backlight module and display apparatus having the lens |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711159960.2A Division CN107884989A (en) | 2011-12-12 | 2012-12-12 | Lens and the display device with the lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103162233A true CN103162233A (en) | 2013-06-19 |
Family
ID=47080353
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105350267A Pending CN103162233A (en) | 2011-12-12 | 2012-12-12 | Lensand display equipment provided therewith |
| CN201711159960.2A Pending CN107884989A (en) | 2011-12-12 | 2012-12-12 | Lens and the display device with the lens |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711159960.2A Pending CN107884989A (en) | 2011-12-12 | 2012-12-12 | Lens and the display device with the lens |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9116386B2 (en) |
| EP (2) | EP2781828A1 (en) |
| KR (1) | KR101962121B1 (en) |
| CN (2) | CN103162233A (en) |
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| CN104335110A (en) * | 2012-05-23 | 2015-02-04 | 船井电机株式会社 | Display apparatus |
| CN104421840A (en) * | 2013-09-02 | 2015-03-18 | 三星显示有限公司 | Lens module, light source assembly and backlight assembly having the lens module |
| CN106842703A (en) * | 2017-01-25 | 2017-06-13 | 宁波正特光学电器有限公司 | A kind of non-sym lens and its backlight module |
| CN106990610A (en) * | 2016-01-21 | 2017-07-28 | Lg电子株式会社 | Display |
| CN107667254A (en) * | 2015-05-26 | 2018-02-06 | Lg 伊诺特有限公司 | Optical lens, lighting module and the lamp unit including the lighting module |
| JP2019531514A (en) * | 2016-11-23 | 2019-10-31 | 深▲せん▼明智超精密科技有限公司Ｓｈｅｎｚｈｅｎ Ｍｉｎｇｚｈｉ Ｕｌｔｒａ Ｐｒｅｃｉｓｉｏｎ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．，Ｌｔｄ． | Ellipsoidal wide-angle backlight lens |
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-
2011
- 2011-12-12 KR KR1020110132850A patent/KR101962121B1/en active IP Right Grant
-
2012
- 2012-10-19 EP EP14171348.7A patent/EP2781828A1/en not_active Withdrawn
- 2012-10-19 EP EP12189348.1A patent/EP2604916A1/en not_active Withdrawn
- 2012-10-23 US US13/658,142 patent/US9116386B2/en not_active Expired - Fee Related
- 2012-12-12 CN CN2012105350267A patent/CN103162233A/en active Pending
- 2012-12-12 CN CN201711159960.2A patent/CN107884989A/en active Pending
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| CN103912843A (en) * | 2013-01-07 | 2014-07-09 | 高一智股份公司 | High-radiation-angle lens |
| CN103912843B (en) * | 2013-01-07 | 2015-08-05 | 高一智股份公司 | Wide radiation angle lens |
| CN104421840A (en) * | 2013-09-02 | 2015-03-18 | 三星显示有限公司 | Lens module, light source assembly and backlight assembly having the lens module |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107884989A (en) | 2018-04-06 |
| EP2604916A1 (en) | 2013-06-19 |
| US9116386B2 (en) | 2015-08-25 |
| EP2781828A1 (en) | 2014-09-24 |
| KR20130066142A (en) | 2013-06-20 |
| US20130148333A1 (en) | 2013-06-13 |
| KR101962121B1 (en) | 2019-03-28 |
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Application publication date: 20130619 |